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greeting!I am an electronics engineering student and i am using Quartus II as a software for HDL. As i try out programs in structural modelling, I get an error saying that the nodes i use to call the components are undefined."Node instance 'H1' instantiates undefined entity HALFADDER"I would greatly appreciate it if you would he;p me with this.thank you.

Hi, I am pretty much struggling with my project. This is what I was assigned.You need to create an 8-bit parallel in/parallel out shift register. You need to create a JK-FF and a T-FF. Every bit in the shift register should change the FF type. Bit 0 JK, Bit1 T, Bit2 JK, Bit3 T, etc.The shift register should be made with the flip flops as components.

Hi sir,i have to make the code for Spi to Arinc 429 interface.Can u please provide the code for the same(the data which is in SPI format hve to be coverted in ARINC 429 word format.)Sir please help me out.i need it urgently.Thank you.

Sir, i am using this bor<='0' when (s="000" or "100" or "101" or "110") else '1' when (s="001" or "010" or "011" or "111") else 'Z';for full subtractor using when else.. but i am getting error with 'or' , when i use each case singly, it works fine.. Shouldn't we do like this ??